Oven knob



FIG. 1 is a top right front perspective view of an oven knob showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right-side elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

CLAIM The ornamental design for an oven knob, as shown and described. 